40074689 has 4 divisors (see below), whose sum is σ = 40123860. Its totient is φ = 40025520.

The previous prime is 40074649. The next prime is 40074701. The reversal of 40074689 is 98647004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28569025 + 11505664 = 5345^2 + 3392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40074689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40074649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23342 + ... + 24999.

It is an arithmetic number, because the mean of its divisors is an integer number (10030965).

Almost surely, 2^40074689 is an apocalyptic number.

It is an amenable number.

40074689 is a deficient number, since it is larger than the sum of its proper divisors (49171).

40074689 is an equidigital number, since it uses as much as digits as its factorization.

40074689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49170.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 40074689 is about 6330.4572504678. The cubic root of 40074689 is about 342.2079176422.

The spelling of 40074689 in words is "forty million, seventy-four thousand, six hundred eighty-nine".